Soft, hyper-elastic and highly-stable silicone-organo-clay dielectric elastomer for energy harvesting and actuation applications

Investigation of the Mechanical and Dynamic-Mechanical Properties of Electrospun Polyvinylpyrrolidone Membranes: A Design of Experiment Approach

“…Figure 4 shows the obtained results for the prepared membranes alongside the nanofiber collection direction (i.e., 0°), with a similar behaviour observed perpendicularly (i.e., 90°). In the investigated frequency range, the samples showed a nearly constant trend of the extensional storage modulus E', as well as a slight decrease of the extensional loss modulus E" (data not shown), which is consistent with their predominantly elastic nature and localizes their response within the rubbery elastic plateau region [59][60][61]. The DMA spectrum of polymers can be indeed divided into several portions depending on the material properties.…”

Electrical energy generated by silicone elastomers filled with nanospring-carbon-nanotubes

“…For some of these materials it was predicted that the amount of energy harvested is increasing with the permittivity. [35][36][37] Despite the abundant literature on high permittivity elastomers [38][39][40][41][42] and composites, [43][44][45][46][47] reports regarding the use of such materials in generators are rare. To the best of our knowledge only one report by Wang et al exists, in which materials with increased permittivity were evaluated as dielectric for DEG.…”

Rheological, Mechanical and Morphological Characterization of Fillers in the Nautical Field: The Role of Dispersing Agents on Composite Materials

“…In such a complex system, dispersing agents are essential to improve the incorporation of powders in the filler and ensure their stability during manufacturing, storage and application processes. The dispersing step is the most difficult and time/energy-consuming part of the entire paint manufacturing process, owing to the difference in surface tension between liquids (polymers and optional solvents) and powders (pigments and/or extenders) [ 25 , 26 , 27 ]. Dispersing agents are able to coat suspended powder particles to form a barrier that, either by ionic repulsion (i.e., an ionic dispersant generally having a low molecular weight) and/or steric hindrance (i.e., a non-ionic dispersant generally having a high molecular weight), prevents particle–particle interactions and aggregation.…”